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NDC: 503

This is the National Destination Code(NDC):503 page list. Its detail is as below.
Area code 503 is one of the original 86 area codes created by AT&T and the Bell System in 1947. It originally served the entire state of Oregon. In 1995, area code 541 was created as an overlay to area code 503. In 2000, area code 971 was created as an overlay to area code 503. Currently, the largest city it serves is Portland, OR, and it overlaps coverage areas with area code 971.
Prefix State Primary city Usage Carrier
(503) 402- Oregon Portland Landline Qwest Corporation
(503) 403- Oregon Portland Landline Mcimetro Access Transmission Services LLC
(503) 404- Oregon Portland Landline Mcimetro Access Transmission Services LLC
(503) 405- Oregon Portland Landline Mcimetro Access Transmission Services LLC
(503) 406- Oregon Portland Landline Level 3 Communications
(503) 407- Oregon Portland Wireless Cellco Partnership DBA Verizon Wireless
(503) 408- Oregon Portland Landline Qwest Corporation
(503) 409- Oregon Salem Wireless T-mobile Usa
(503) 410- Oregon St Helens Wireless Sprint Spectrum L.p.
(503) 412- Oregon Portland Landline Qwest Corporation
(503) 413- Oregon Portland Landline Qwest Corporation
(503) 414- Oregon Portland Landline Qwest Corporation
(503) 415- Oregon Portland Landline Qwest Corporation
(503) 416- Oregon Portland Landline Tw Telecom Of Oregon LLC
(503) 417- Oregon Portland Landline Qwest Corporation
(503) 418- Oregon Portland Landline Qwest Corporation
(503) 419- Oregon Beaverton Landline Xo Oregon
(503) 420- Oregon Dallas Wireless Sprint Spectrum L.p.
(503) 421- Oregon Portland Wireless Sprint Spectrum L.p.
(503) 422- Oregon Portland Wireless Sprint Spectrum L.p.
(503) 423- Oregon Portland Landline Qwest Corporation
(503) 424- Oregon Beaverton Landline Oregon Tel
(503) 425- Oregon Portland Landline Qwest Corporation
(503) 426- Oregon Portland Landline North County Communications Corp.
(503) 427- Oregon Tigard Landline Level 3 Communications
(503) 428- Oregon Salem Landline New Cingular Wireless PCS
(503) 429- Oregon Vernonia Landline Frontier Communications Northwest
(503) 430- Oregon Beaverton Landline Teleport Communications America
(503) 431- Oregon Beaverton Landline Frontier Communications Northwest
(503) 432- Oregon Tigard Landline Teleport Communications America
(503) 433- Oregon North Plains Landline Mcimetro Access Transmission Services LLC
(503) 434- Oregon Mcminnville Landline Frontier Communications Northwest
(503) 435- Oregon Mcminnville Landline Frontier Communications Northwest
(503) 436- Oregon Seaside Landline Qwest Corporation
(503) 437- Oregon Mcminnville Wireless Sprint Spectrum L.p.
(503) 438- Oregon St Helens Landline Teleport Communications America
(503) 439- Oregon Beaverton Landline Frontier Communications Northwest
(503) 440- Oregon Seaside Wireless Cellco Partnership DBA Verizon Wireless
(503) 441- Oregon Portland Landline Qwest Corporation
(503) 442- Oregon Beaver Landline T-mobile Usa
(503) 443- Oregon Beaverton Landline Frontier Communications Northwest
(503) 444- Oregon Beaverton Landline Electric Lightwave DBA Integra Telecom
(503) 445- Oregon Beaverton Landline Integra Telecom Of Oregon
(503) 446- Oregon Silverton Landline Cricket Communications
(503) 447- Oregon Tigard Landline Teleport Communications America
(503) 448- Oregon Aumsville Landline Scs Communications And Security
(503) 449- Oregon Portland Wireless Sprint Spectrum L.p.
(503) 450- Oregon Portland Landline Qwest Corporation
(503) 451- Oregon Tigard Landline Teleport Communications America
(503) 452- Oregon Portland Landline Qwest Corporation
(503) 453- Oregon Tigard Landline Frontier Communications Northwest
(503) 454- Oregon Tigard Landline Teleport Communications America
(503) 455- Oregon Clatskanie Landline Qwest Corporation
(503) 456- Oregon Beaverton Landline Mcimetro Access Transmission Services LLC
(503) 457- Oregon Tillamook Wireless Cellco Partnership DBA Verizon Wireless
(503) 458- Oregon Astoria Landline Centurytel Of Oregon
(503) 459- Oregon Portland Landline Tw Telecom Of Oregon LLC
(503) 460- Oregon Portland Landline Qwest Corporation
(503) 461- Oregon Seaside Landline Universal Telecommunications
(503) 462- Oregon Tigard Landline Teleport Communications America
(503) 463- Oregon Salem Landline Qwest Corporation
(503) 464- Oregon Portland Landline Qwest Corporation
(503) 465- Oregon Gresham Landline Frontier Communications Northwest
(503) 466- Oregon Beaverton Landline Frontier Communications Northwest
(503) 467- Oregon Portland Landline Electric Lightwave DBA Integra Telecom
(503) 468- Oregon Astoria Landline Level 3 Communications
(503) 469- Oregon Beaverton Landline Frontier Communications Northwest
(503) 470- Oregon Seaside Wireless T-mobile Usa
(503) 471- Oregon Portland Landline Qwest Corporation
(503) 472- Oregon Mcminnville Landline Frontier Communications Northwest
(503) 473- Oregon Portland Landline Mcimetro Access Transmission Services LLC
(503) 474- Oregon Mcminnville Landline Frontier Communications Northwest
(503) 475- Oregon Portland Wireless New Cingular Wireless PCS
(503) 476- Oregon Newberg Landline Integra Telecom Of Oregon
(503) 477- Oregon Portland Landline Cellco Partnership DBA Verizon Wireless
(503) 478- Oregon Portland Landline Qwest Corporation
(503) 479- Oregon Portland Landline Tw Telecom Of Oregon LLC
(503) 480- Oregon Salem Landline Integra Telecom Of Oregon
(503) 481- Oregon Portland Wireless T-mobile Usa
(503) 482- Oregon Portland Landline Tw Telecom Of Oregon LLC
(503) 483- Oregon Cloverdale Landline Level 3 Communications
(503) 484- Oregon Portland Landline AT&T Local
(503) 485- Oregon Salem Landline Advanced Telcom Group
(503) 486- Oregon Portland Landline Global Crossing Local Services,inc.-or
(503) 487- Oregon Newberg Landline Global Crossing Local Services,inc.-or
(503) 488- Oregon Portland Landline Tw Telecom Of Oregon LLC
(503) 489- Oregon Gresham Landline Integra Telecom Of Oregon
(503) 490- Oregon Portland Wireless Sprint Spectrum L.p.
(503) 491- Oregon Gresham Landline Frontier Communications Northwest
(503) 492- Oregon Gresham Landline Frontier Communications Northwest
(503) 493- Oregon Portland Landline Qwest Corporation
(503) 494- Oregon Portland Landline Qwest Corporation
(503) 495- Oregon Beaverton Landline Teleport Communications America
(503) 496- Oregon Portland Landline Integra Telecom Of Oregon
(503) 497- Oregon Portland Landline Qwest Corporation
(503) 498- Oregon Tigard Landline Teleport Communications America
(503) 499- Oregon Portland Landline Qwest Corporation
(503) 500- Oregon Portland Landline Teltrust Corporation
(503) 501- Oregon Portland Wireless Cricket Communications
(503) 502- Oregon Portland Wireless Cellco Partnership DBA Verizon Wireless